US11754188B2 - Seal cartridge with electrically conductive non-woven grounding - Google Patents

Seal cartridge with electrically conductive non-woven grounding Download PDF

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Publication number
US11754188B2
US11754188B2 US17/514,986 US202117514986A US11754188B2 US 11754188 B2 US11754188 B2 US 11754188B2 US 202117514986 A US202117514986 A US 202117514986A US 11754188 B2 US11754188 B2 US 11754188B2
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US
United States
Prior art keywords
retainer
seal
exclusionary
shaft
electrically conductive
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Application number
US17/514,986
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English (en)
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US20230137020A1 (en
Inventor
D. Anthony MANLEY
Darin Battles
Christopher Beller
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Freudenberg NOK GP
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Freudenberg NOK GP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Freudenberg NOK GP filed Critical Freudenberg NOK GP
Priority to US17/514,986 priority Critical patent/US11754188B2/en
Assigned to FREUDENBERG-NOK GENERAL PARTNERSHIP reassignment FREUDENBERG-NOK GENERAL PARTNERSHIP ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BATTLES, DARIN, BELLER, CHRISTOPHER, Manley, D. Anthony
Priority to EP22192743.7A priority patent/EP4174345B1/de
Priority to CN202211121366.5A priority patent/CN116066562A/zh
Publication of US20230137020A1 publication Critical patent/US20230137020A1/en
Priority to US18/330,434 priority patent/US20230313888A1/en
Application granted granted Critical
Publication of US11754188B2 publication Critical patent/US11754188B2/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/44—Free-space packings
    • F16J15/447—Labyrinth packings
    • F16J15/453—Labyrinth packings characterised by the use of particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3208—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/322—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip supported in a direction perpendicular to the surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
    • F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
    • F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
    • F16J15/3256—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3268—Mounting of sealing rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials

Definitions

  • the present disclosure relates to a seal cartridge with an electrically conductive non-woven element.
  • cassette seals are designed to allow high contamination exclusion by multiple exclusion features.
  • a cassette seal arrangement for sealing between a shaft and a housing includes a sleeve configured to be mounted to the shaft and including a cylindrical portion and a radially extending portion extending radially outward from the cylindrical portion.
  • a retainer cartridge includes a main retainer configured to be mounted to the housing and supporting a seal member that includes a main seal lip and an exclusionary retainer connected to the main retainer and supporting an exclusionary seal configured to engage the shaft.
  • An electrically conductive non-woven element is disposed longitudinally between the seal member and the exclusionary seal and engages the retainer cartridge and is configured to engage the shaft.
  • FIG. 1 is a cross-sectional view of an exemplary cassette seal arrangement according to a first embodiment
  • FIG. 2 is a cross-sectional view of an exemplary cassette seal arrangement according to an alternative second embodiment.
  • FIG. 3 is a plan view of an exemplary electrically conductive non-woven element.
  • the cassette seal arrangement 10 is configured to be mounted between a housing 12 and a shaft 14 for sealing a gap therebetween.
  • the cassette seal arrangement 10 includes a sleeve 16 configured to be mounted to the shaft 14 and including a first cylindrical portion 16 a that receives the shaft 14 therein and a first radially extending portion 16 b extending radially outward from the cylindrical portion 16 a .
  • a second cylindrical portion 16 c extends axially from an outer end of the radially extending portion 16 b and a second radially extending portion 16 d extending from an end of the second cylindrical portion 16 c .
  • the sleeve 16 can further include an elastomeric layer 18 on an inner surface of the cylindrical portion 16 a and on an outboard side of the first radially extending portion 16 b and the second cylindrical portion 16 c of the sleeve 16 .
  • a retainer cartridge 20 is configured to be mounted to the housing 12 and includes a main retainer 22 and an exclusionary retainer 24 connected to one another.
  • the main retainer 22 supports a seal member 26 that includes a main seal lip 28 and a pair of dust lips 30 a , 30 b .
  • the main retainer 22 includes a cylindrical outer portion 22 a that engages the housing 12 and a radially outwardly bent region 22 b that extends from a first end of the cylindrical outer portion 22 a and that defines a shoulder that abuts against the housing.
  • the radially outwardly bent region 22 b terminates in a U-shaped bend 22 c that captures an outer end 24 a of the exclusionary retainer 24 .
  • the main retainer 22 includes a first radially inwardly extending portion 22 d extending inwardly from a second end of the cylindrical outer portion 22 a .
  • An inner cylindrical portion 22 e extends axially from a radial inner end of the first radially inwardly extending portion 22 d .
  • a second radially inwardly extending portion 22 f extends radially inward from a second end of the inner cylindrical portion 22 e .
  • the seal member 26 is molded on an inner end of the second radially inwardly extending portion 22 f .
  • the main seal lip 28 and a first of the pair of dust lips 30 a engage the cylindrical portion 16 a of the sleeve 16 while a second dust lip 30 b of the pair of dust lips engage the first radially extending portion 16 b of the sleeve 16 .
  • the main seal lip 28 can include a garter spring 32 .
  • the elastomer molded on the second radially inwardly extending portion 22 f further includes a bumper region opposing the second radially extending portion 16 d of the sleeve 16 .
  • the outer end 24 a of the exclusionary retainer 24 is connected to the U-shaped bend 22 c of the main retainer 22 .
  • the exclusionary retainer 24 further includes a cylindrical portion 24 b extending axially from the outer end 24 a in a direction opposite to the main retainer 22 .
  • a radially inwardly extending portion 24 c extending radially inwardly from the cylindrical portion 24 b and supporting an exclusionary seal 36 .
  • the exclusionary seal 36 is configured to engage the shaft and can include a pair of dust lips 36 a , 36 b.
  • An electrically conductive non-woven element 40 is disposed longitudinally between the seal member 26 and the exclusionary seal 36 .
  • the electrically conductive non-woven element 40 has an outer perimeter 40 a that engages the retainer cartridge 24 and an inner perimeter 40 b configured to engage the shaft 14 .
  • the electrically conductive non-woven element 40 can be adhered to an outboard face of the first radially extending portion 16 b of the sleeve 16 .
  • the electrically conductive non-woven element 40 can further include keyhole slots 42 extending radially inward from the outer perimeter 40 a . The keyholes 42 reduce the radial load of the nonwoven element 40 and reduce the torque required to rotate the shaft 14 and sleeve 16 when in contact with the exclusion/retainer seal.
  • an alternative cassette seal arrangement 110 including a modified exclusionary retainer 124 for supporting the exclusionary seal 136 in engagement with an auxiliary sleeve 114 disposed on the shaft 14 .
  • the modified exclusionary retainer 124 has a shorter radially inwardly extending portion 124 c than the exclusionary retainer 24 .
  • Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those who are skilled in the art. Numerous specific details are set forth such as examples of specific components, devices, and methods, to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms and that neither should be construed to limit the scope of the disclosure. In some example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.
  • first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as “first,” “second,” and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
  • Spatially relative terms such as “inner,” “outer,” “beneath,” “below,” “lower,” “above,” “upper,” and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “below” or “beneath” other elements or features would then be oriented “above” the other elements or features. Thus, the example term “below” can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
US17/514,986 2021-10-29 2021-10-29 Seal cartridge with electrically conductive non-woven grounding Active 2041-12-13 US11754188B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US17/514,986 US11754188B2 (en) 2021-10-29 2021-10-29 Seal cartridge with electrically conductive non-woven grounding
EP22192743.7A EP4174345B1 (de) 2021-10-29 2022-08-30 Dichtungspatrone mit elektrisch leitfähiger vliesstofferdung
CN202211121366.5A CN116066562A (zh) 2021-10-29 2022-09-15 用于在轴与壳体之间进行密封的盒式密封装置
US18/330,434 US20230313888A1 (en) 2021-10-29 2023-06-07 Seal cartridge with electrically conductive non-woven grounding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17/514,986 US11754188B2 (en) 2021-10-29 2021-10-29 Seal cartridge with electrically conductive non-woven grounding

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/330,434 Continuation-In-Part US20230313888A1 (en) 2021-10-29 2023-06-07 Seal cartridge with electrically conductive non-woven grounding

Publications (2)

Publication Number Publication Date
US20230137020A1 US20230137020A1 (en) 2023-05-04
US11754188B2 true US11754188B2 (en) 2023-09-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
US17/514,986 Active 2041-12-13 US11754188B2 (en) 2021-10-29 2021-10-29 Seal cartridge with electrically conductive non-woven grounding

Country Status (3)

Country Link
US (1) US11754188B2 (de)
EP (1) EP4174345B1 (de)
CN (1) CN116066562A (de)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114558A (en) * 1957-07-01 1963-12-17 Federal Mogul Bower Bearings Fluid seal
US4550920A (en) * 1984-05-17 1985-11-05 Nippon Oil Seal Industry Co., Ltd. Oil seal with main lip, subsidiary lip and dust lip
US5292199A (en) * 1993-05-07 1994-03-08 Ford Motor Company Axle wheel seal and bearing arrangement for a motor vehicle
US6692007B2 (en) * 2001-10-31 2004-02-17 Transcom, Inc. Seal for a shaft
JP2007247708A (ja) 2006-03-14 2007-09-27 Nok Corp 軸付きシール
CA2893739A1 (en) * 2014-07-11 2016-01-11 Carl Freudenberg Kg Preliminary seal, preliminary seal arrangement and sealing ring comprising the preliminary seal
CN111043315A (zh) 2019-12-20 2020-04-21 嘉科（无锡）密封技术有限公司 一种接地式油封
DE102021102570A1 (de) * 2021-02-04 2022-08-04 Carl Freudenberg Kg Erdungsring und Anordnung, die einen solchen Erdungsring umfasst

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114558A (en) * 1957-07-01 1963-12-17 Federal Mogul Bower Bearings Fluid seal
US4550920A (en) * 1984-05-17 1985-11-05 Nippon Oil Seal Industry Co., Ltd. Oil seal with main lip, subsidiary lip and dust lip
US5292199A (en) * 1993-05-07 1994-03-08 Ford Motor Company Axle wheel seal and bearing arrangement for a motor vehicle
US6692007B2 (en) * 2001-10-31 2004-02-17 Transcom, Inc. Seal for a shaft
JP2007247708A (ja) 2006-03-14 2007-09-27 Nok Corp 軸付きシール
CA2893739A1 (en) * 2014-07-11 2016-01-11 Carl Freudenberg Kg Preliminary seal, preliminary seal arrangement and sealing ring comprising the preliminary seal
US10190690B2 (en) 2014-07-11 2019-01-29 Carl Freudenberg Kg Preliminary seal, preliminary seal arrangement and sealing ring comprising the preliminary seal
CN111043315A (zh) 2019-12-20 2020-04-21 嘉科（无锡）密封技术有限公司 一种接地式油封
DE102021102570A1 (de) * 2021-02-04 2022-08-04 Carl Freudenberg Kg Erdungsring und Anordnung, die einen solchen Erdungsring umfasst

Also Published As

Publication number Publication date
CN116066562A (zh) 2023-05-05
EP4174345B1 (de) 2024-08-21
EP4174345A1 (de) 2023-05-03
US20230137020A1 (en) 2023-05-04

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